Improvement in hinges for shutters



@aan anni.

JOHANN HOF AND PHILIPP BRENNEIS, OF BALTIMORE, MARYLAND.

l Letters Patent No. 4102,125, dated April 19, 1870.

lfMPROVEMBNT IN HINGES POR SHUTTERS.

The Schedule referred to iu these Letters Patent and making part; of the same.

We, J oHAaN Hot` and PHILIPP Banssnrs, both ot Baltimore, in the State of Maryland, have invented a new and useful 'Improvement in Sh utter-Hin ges, which is described as'follows:

A Nature of the Invention. Our invention is of that class or description of shutter-hinges which are provided with means for locking `the shutters or blinds back against the wall.

The improvement relates to a novel form ot' locking device, combining superior 'cheapness, simplicity, and neatness in appearance, and consists essentially in the employment or use of a spring-latch inclosed in a tubular socket, extending transversely through the leaf, to which it is applied, and a suitable catch on the other leaf from which the latch is released by an ontward pressure.

General Description. The accompanying drawing represents one oi' ourA improved hinges detached.

Figure 1 is a perspective view of the hinge in an open position. y

Figure 2, a horizontal transverse section of the same in like posit-ion.

Figure 3, a horizontal transverse section of the hinge in a closed position.

We construct the two leaves, A B, of our hinge of any preferred shape, and unite them by any known or suitable joint.

The leaves are further respectively provided on their backs with a latch, u, and a catch, b, to lock them open, said latch and catch being constructed with in- A depression, f,corresponding with the head e' of the latch stem e may be provided'in the leaf B, for the recept-ion ot' said head in the closed position of the hinge.

It will be seen that both the leaves of the hinge present simple forms for casting. v

The latch a, its stem e e', and spring d are the only separate parts in the leaf A. 'Vith the exception of these it may be cast of complete form.

B may be east ot' entirely complete form.

The latch a may also be cast.

The hinges, with the improvement applied, may thus obviously he made for a trifle in addition to cost without.

The device is ot' easy and simple operation, is not liable to strain or wear, is ot' neat appearance, and increases the bulk oi the hinges to the least possible extent.

lhe spring employed is of the cheapest form, and is entirely concealed from view. v

No additional labor is involved in applying the hinges in view of their special construction.

The parts are all permanently attached and require no adjustment, and the projections i) c are both outside ofthe attaching faces.

The provision is for the lower hinges. The upper ones employed with them will he of similar style Without special provision. We do not claim a cam-shaped projection on one leaf of the hinge for holding a spring-latch in the other; but

lVe do claim as our inventionrlhe spring-latch a c c', applied, as shown, in a transverse socket in one leaf ot' the hinge, so as to be retracted by an outward pressure, and engaging with a catch of suitable construction on the other leaf', substantially as described.

J OH. HOF. PHILIPP BRENN EIS.

Witnesses:

J. F. Zts'rnnn, AUGUST DEGEXHARDT. 

